学习水平评估是教学评估的重要组成部分。全国第一次初中数学教 学抽样调查的报告科学地评估了1987届初中学生的数学学习水平,从中 可以进一步看出数学学习水平评估的意义、内容和方法。这次教学调查 采用分级分层整群随机抽样方法,从京、津、晋、沪、苏、皖、粤、 鄂、桂、陕、甘、吉、黑、川、滇等15个省(自治区、直辖市)抽取605 所学校的49603名学生作为调查对象。调查方式主要是对学生进行数学 测试

Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box outside by 4: 10 Wednesday, October I Problem sets will not be accepted late Solutions will be posted on the web October 2

第一节 心理发展理论概述 第二节 心理发展的基本问题 第三节 心理发展的基本规律 第一节 认知理论概述 第二节 意识和注意 第三节 感觉和知觉 第四节 记忆 第五节 思维

Bob, a student taking 7.012, looks at a long-standing puddle outside his dorm window Curious as to what was growing in the cloudy water, he takes a sample to his TA, Brad Student. He wanted to know whether the organisms in the sample were prokaryotic or eukaryotic

Many intracellular proteins are required to interact or bind to other macromolecules within a bind DNA. Such proteins often have conserved structural features, called motifs, whis at can cell in order to function properly. One class of such proteins is comprised of proteins tha interact with DNA. One such motif consists of two closely aligned a-helices(shown as cylinders below)that each have leucine-rich regions. This motif is referred to as a leucine

Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box outside by 4: 10 Wednesday, September 17. Problem sets will not be accepted late. Solutions will be posted on the web

Please print out this problem set and record your answers on the printed copy. Answers to this problem set are to be turned in at the box by 4: 10 Wednesday, September10. Problem sets will not be accepted late. Solutions will be posted on the web

第一节 肾的功能解剖 第二节 肾小球的滤过功能 第三节 肾小管和集合管的转运功能 第四节 尿液的浓缩和稀释 第五节 尿生成的调节 第七节 尿的排放 第二节 清除率

熟學這一門科學起源於人類對於熱與冷现象的本質的追求。由於 在有史以前人類已經發明了火,我們可以想像到,追求熟冷现象的本 質的企可能是人類最初對自然界法則的追求之一

1 Atoms and Molecules; Orbitals and Bonding 2 Alkanes 3 Alkenes and Alkynes 4 Stereochemistry 5 Rings 6 Alkyl Halides, Alcohols, Amines, Ethers, and Their Sulfur-Containing Relatives 7 Substitution and Elimination Reactions: The SN2, SN1, E1, and E2 Reactions 8 Equilibria 9 Additions to Alkenes 1 10 Additions to Alkenes 2 and Additions to Alkynes 11 Radical Reactions 12 Dienes and the Allyl System: 2p Orbitals in Conjugation 13 Conjugation and Aromaticity 14 Substitution Reactions of Aromatic Compounds 15 Analytical Chemistry: Spectroscopy 16 Carbonyl Chemistry 1: Addition Reactions 17 Carboxylic Acids 18 Derivatives of Carboxylic Acids: Acyl Compounds 19 Carbonyl Chemistry 2: Reactions at the α Position 20 Special Topic: Reactions Controlled by Orbital Symmetry 21 Special Topic: Intramolecular Reactions and Neighboring Group Participation 22 Special Topic: Carbohydrates 23 Special Topic: Amino Acids and Polyamino Acids (Peptides and Proteins)